Metal beam or girder



(No Model.)

E. M. BUTZ.

METAL BEAM 0R GIRDER.

Patented Sept. 9, 1.884.

www J4@ 53m, t# @Wi-S?? WITNESSES:

UNITED STATES PATENT OFFICE.

EDWARD M. BLITZ, or ALLEGIIENY, PENNSYLVANIA.

METAL BEAM OR GIRDER.

SPECIFICATION forming part of Letters Patent No. 304,797, datedSeptember 9, 1884.

(No model.)

To all whom t may concern:

Beit known that I, EDWARD M. BUTZ, a citizen of the United States,residing at Allegheny, in Jthe county of Allegheny and State ofPennsylvania, have invented or discovered a certain new and usefulImprovement in Metal Beams or Girders, of which improvement thefollowing is a specification.

In the accompanying drawings, whicli make part of this speciiication,Figure l is a section in perspective of a metal shape plate or baradapted for use in beams or girders embodying my invention; Figs. 2 to1l, inclusive, similar sections of beams, illustrating,respect ivel y,different structural applications thereof.

My invention relates to beams or girders for buildings and otherstructures;- and its object is to provide a light and strong beam havinginclined sides or faces on its web, and suitable strengthening membersabove and below said inclined sides.

The improvements claimed are hereinafter fully set forth.

To carry out my invention, I form of rolled metal a plate, A, of theshape in section shown in the several figures. Said plate, which isfully set forth in another application for LettersI Patent by me filedDecember 13, 1883, Serial No. 114,430,(Case 0,) and is therefore notclaimed per se as of Iny present invention, is shaped as follows-to wit,having a continuous body bent into four different planes arrangedrelatively as follows: The two outer portions, a and a3, of the plate A,which are designed to stand vertically when in use in a beam, and hencemay be termed its vertical portions;7 are in or substantially in linewith each other, or in parallel planes; and ofthe two intermediateportions, one, a', is bent or inclined at an obtuse angle to the uppervertical portion, a, and the other, a2, bent so as to connect the lowerside of the inclined portion, a', with the upper side of the verticalportion a3, thus providing in the plate an upper and alower verticalweb, an inclined web, and a transverse web. Under my present invention Iemploy a plate so shaped as a lateral member in a built or compositebeam or girder, instances of different forms of which are illustrated inFigs. 3 to 11, inclusive.

Fig. 2 shows a beam formed of two plates A having their webs oppositelyinclined and connected to a plate interposed plate or web, L; Fig. 3, abeam having an I-beam, M, in terposed between and connected to twoplates, A, with their inclined webs bent in opposite directions; Fig. 4,a beam having a web, N, of inverted-T section interposed between andconnected to two plates, A; Fig. 5, a beam having an intermediatedeck-beam web, O, and lateral plates A connected thereto, the rib o ofsaid deck-beam standing at top, and its flanges o at bottom; Fig; 6, abeam having an intermediate declrbeam, O, and lateral plates A connectedthereto, the deck-beam having a shallow web tting between the uppervertical webs of the plates A, and having its iianges o at top; Fig. 7,a beam having a T-iron, P, interposed between and connected to the uppervertical portions, a, of two plates A; Fig. 8, a beam having a plain ribor web, L, having angle-iron flanges Z at top interposed betweenandconnected to two plates A; Fig. 9, a beam composed of a channel-iron webor plate, Q, and a plate, A, connected to the flanged side thereof; Fig.10, a beam composed of a web of L-section, R, and a plate, A, connectedto the iiangedside thereof; and Fig. Il, a beam composed of anangle-iron, S, connected to the upper vertical portion a of a plate, A.

It will be obvious that the form and section of the member ,or memberscombined with one or more of the plates described in the construction ofa composite beam may be varied in the judgment of the constructcr, and Ido not therefore limit myself to any specific form of connected web insaid combinations.

I claim herein as my invention- The combination, in a composite beam orgirder, of a metal plate of the shape or section described, and a rib orweb abut-ting against a vertical web of said plate, substantially as setforth.

In testimony whereof I have hereunto set my hand.

EDVARD M. BUTZ.

Witnesses:

J. SNowDEN BELL, It. H. WIIIrrLEsnY.'

